Informal: He spent more time playing computer games than me.
Formal: He spent more time playing computer games than I.
2. 在表達“讓步”概念時,很多考生選擇使用的but, anyway, all the same, though, although等為非正式文體常用詞語表達。正式文體則常使用yet, however, nevertheless, in spite of (despite), notwithstanding等詞語,
Informal: He tried to overcome his addiction to the Internet, but he failed.
Formal: He endeavoured to overcome his addiction to the Internet; however, it turned out to be a failure.